docs: def load_random(self, num_bytes, offset = 0):
          """
          Ask YubiHSM to generate a number of random bytes to any offset of it's internal
          buffer.
  
          The data is stored internally in the YubiHSM in temporary memory -
          this operation would typically be followed by one or more L{generate_aead}
          commands to actually retreive the generated secret (in encrypted form).
  
          @param num_bytes: Number of bytes to generate
          @type num_bytes: integer
  
          @returns: Number of bytes in YubiHSM internal buffer after load
          @rtype: integer
  
          @see: L{pyhsm.buffer_cmd.YHSM_Cmd_Buffer_Random_Load}
          """
          return pyhsm.buffer_cmd.YHSM_Cmd_Buffer_Random_Load(self.stick, num_bytes, offset).execute()